Anchoring device for drilling-machines.



PATENTED MAR. 17, 1903.

I. WANTLING. ANGHORING DEVICE FOR DRILLING MACHINES.

APPLICATION FILED 83131.5. 1901.

N0 MODEL.

UNITED STATES PATENT OFFICE.

ISAAC WVANTLING, OF PEORIA, ILLINOIS, ASSIGNOR TO WANTLINGS FAVORITECOAL DRILL COMPANY, OF PEORIA, ILLINOIS, A COR- PORATION OF ILLINOIS.

ANCHORING DEVICE FOR DRILLING-MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 722,778, dated March17, 1903.

Application filed September 5, 1901. Serial No. 74,376. (No model.)

To all whmn it may concern:

Beit known that I, ISAAC WANTLING, a citizen of the United States,residing at Peoria, in the county of Peoria and State of Illinois,

have invented certain new and useful Improvements in Anchoring Devicesfor Drilling-Machines; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enableto others skilled in the art to which it appertains to make and use thesame.

This invention relates to certain newand useful improvements in coal orrock drills wherein a supporting or anchoring device is provided, beingnovel in construction, durable, and well adapted for the purposedesigned.

The object of the invention is an anchor for drilling-machines, to whichthe forward end of a grip-bar or other machine part may be detachablysecured for supporting and anchoring the same to the material to beworked.

The device comprises a Wedge portion and parallel extensions of saidWedge peculiarly adapted, whereby the wedge may be ham mered into thematerial and secured to the machine parts.

That the invention may be more fully understood, reference is had to theaccompany- 0 ing drawings, forming a part of this specifiand Fig. 8 is alongitudinal section through Fig. 7.

Like numerals refer to corresponding parts throughout the figures, inwhich the anchor is shown having a flattened wedge or tapered 5 portionl'rectangular in shape, and 2 and 3 are extended portions of the wedge,lying parallel to each other and joined by a web 4, as shown. Theportion 2 is shown tubular in construction, while the portion 3 is shownas an offset Fig. 2 is a plan view of the.

5 is a perforation arranged in the anchor and cuts through a portion ofone side of the tubular extension 2 and the web portionet,

and 6 is a loop or ring integral with the side face of the offset, asshown.

7 indicates a bar or rod which may ormay not be tubular incross-section, comprising part of a grip-bar or other machine partarranged to carry operating parts of a drill and which is designed to bedetachably secured to the anchor. In thisinstance the grip bar or rod isinserted into the tubular extension and held firmly therein by means ofa pin or similar device 8, attached to the loop 6 of the anchor by'achain 9 by inserting the pin through the perforation 5 in the anchor andcausing the same to engage a notch or serration 10 in the bar or rod 7.

In Fig. 5 is illustrated an anchor wherein the extensions 2 and 3 lieparallel and side by side in a horizontal plane similar to extensions inFig. l; but the web portion is removed, and the extension 2 may berectangular in shape, as shown, or other desired formation, and solid ornot, but is adapted to carry a grip-bar or machine part by the samebeing telescoped onto the extension, as shown in dotted lines. Thematching faces of the extensions are provided with matching semicirculargrooves 11 and 12 to accommodatethe pin 8, which is dropped into thegrooves and through a serration of the grip-bar to retain it inposition.

In Fig. 7 the arrangement of the extensions of the wedge are slightlymodified over the two former described, wherein the extension 3 is shownas a reduced rounded rear extension of the wedge and the extension 2 isshown slightly longer and lying in a plane parallel with and above thesame and tapers off and forms a part of the wedge portion 1, and at asuitable point on the extensions their matching faces are provided withsemicircular notches or grooves 11 and 12, together forming parts of acomplete circular perforation. In this device, asin the. one illustratedin Fig. 5, it is intended to slide the end of the grip-bar or machinepart over the extension 3 and lock the parts substantially as in 50 ordriving portion of polygon shape. the manner shown in Fig. 5 or Fig. 1.This application of an anchor illustrates several methods of arrangingthe hammer portion of the wedge and the parts to which the gripbar ormachine parts may be located, either by inserting the same into anextension of the wedge or over the same and lock the parts together.

I am aware of several devices which are' comprising a member having atapered body and a reduced rear body thereof,.a supplemental extensionof the tapered body either of circular or polygon form lying parallelwith the reduced body part, a notch or perforation cutting through aportion of said extension, a machine part arranged to have connectionwith said extension and provided with a notch in its body arranged to beengaged by a pin or similar device inserted through'the notch orperforation'of the extension for retaining the member and machine partin a locked relation, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

ISAAC WANTLING.

